Originally Posted by
dream
I knew it sounded too good for nobody to have come about it before...
Well at least I know it works and is practical.
Is the brightness of 2 stacked X brightness projectors any different than a single 2X brightness projector? (check my diagram)
Definitely practical. Back in the day, before video projectors, we stacked Kodak Ektagraphic 35mm slide projectors for pin-registered 35mm slide projection mosaics. Large front or rear projection screens were used. Typically 3 projectors in a stack were used (but 4 projector stacks also existed) with 3 or 4 stacks providing horizontal coverage for the full screen width, all under automated, programmable projector controllers. Like yours, and the one VJ AIWAZ showed, each projector had 3-axis controls for alignment with other projectors in the stack.
With video projectors now, it's just got to be way cooler.
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Everything depends on everything else